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Leadless Chip Thermometrics NTC Thermistor , SMD / Surface Mount Thermistor
Leadless Chip Thermometrics NTC Thermistor , SMD / Surface Mount Thermistor
Specifications
Place of Origin :
Dongguan,China
Brand Name :
UCHI
Certification :
UL,SGS.CTI,ROHS
Model Number :
XTV
MOQ :
ONE REEL
Price :
Negotiable
Packaging Details :
Reel
Delivery Time :
7-10 workday
Payment Terms :
T/T
Supply Ability :
500000000PCS MONTHLY
Description

Leadless Chip Thermometrics NTC Thermistor , SMD / Surface Mount Thermistor

SMD / Surface Mount Thermistor, NTC Leadless Chip Thermometrics Thermistors Feature


Ultra small size2012

Lead(pb)freeproduct.Wide operating temperature:﹣40℃ to﹢125℃.
Lowresistance and high B-value available.
Superiorheatresistance to soldering and excellent solderability.
Productconforming to ROHS directive.

SMD / Surface Mount Thermistor, NTC Leadless Chip Thermometrics Thermistors Applications


Temprature sensor.
Temprature compensaion.

SMD / Surface Mount Thermistor, NTC Leadless Chip Thermometrics Thermistors Filed
Equipment to mobile communication TCXOs(temperature compensated type quartz oscillator),RF circuits (power amp circuits, temperature monitoring circuits) LCD panel temperature compensated crystal oscillator, witch is the key device for mobile phones.□ Temperature compensating circuit of LCD□ Computer relate equipment
CPU periphery temperature monitoring circuits, temperature compensation circuit of optical pickup for DVD writing, temperature compensated in HDD.
DVC/DSC device
Auto-focus circuits , plunger peripheral circuits, battery circuits ,battery pack temperature control circuits.□ Equipment relate to car audio
Varistor types of pickup temperature compensation circuits, temperature compensation for various types of circuits
Optical communication related equipment
Laser transmission circuit temperature compensation

SMD / Surface Mount Thermistor, NTC Leadless Chip Thermometrics Thermistors Electrical Characteristics

Part Number R25( kΩ) B value
XTN2012-333J3900NT-A1B1B 33 3900

SMD / Surface Mount Thermistor, NTC Leadless Chip Thermometrics Thermistors Production Dimension

Type L (mm) W (mm) H(mm) L1 (mm)
2012 2.00±0.20 1.20±0.20 0.80±0.20 0.40±0.20

Leadless Chip Thermometrics NTC Thermistor , SMD / Surface Mount Thermistor

SMD / Surface Mount Thermistor, NTC Leadless Chip Thermometrics Thermistors Soldering Recommendation

The principal techniques used for the soldering of components in surface mount technology are infrared reflow and wave soldering.

Wave Soldering

When wave soldering. The SMD is attach to the circuit board by means of an adhesive. The assembly is then place on a conveyor and run though the soldering process to contact the wave. Wave soldering is the most strenuous of the processes. To avoid the possibility of generating stresses due to thermal shock., a preheat stage in the soldering process is recommended, and the peak temperature of the solder process should be rigidly controlled. The following is the typical profiles.

Leadless Chip Thermometrics NTC Thermistor , SMD / Surface Mount Thermistor

WAVE SOLDER PROFILE

Reflow Soldering

When reflow soldering, the device is placed a solder paste on the substrate ,as the solder paste is heated, it re-flows and solders the unite to board. When using a reflow process ,care should be taken to ensure that the SMD is not subjected to an thermal gradient steeper than 4 degrees per second; the ideal gradient being 2degrees per second. During the soldering process, preheating to within 100 degrees of the soldier’s peak temperature is essential to minimize thermal shock. The following is typical profile.

Leadless Chip Thermometrics NTC Thermistor , SMD / Surface Mount Thermistor

REFLOW SOLDER PROFILE

Packaging Specification

Carrier tape transparent cover tape should be heat-sealed to carry the products, and the reel should be used to reel the carrier tape.

The adhesion of the heat-sealed cover tape shall be 40﹢20/﹣15 grams.

Both the head and the end portion of taping shall be empty for reel package and SMT auto-pickup machine. And a normal paper tape shall be connected in the head of taping for the operator handle.

Taping Dimensions Unit:mm

Leadless Chip Thermometrics NTC Thermistor , SMD / Surface Mount Thermistor

type A B W F E P P0 T D
1005 1.15±0.1 0.65±0.1 8±0.2 3.5±0.05 1.75±0.1 4±0.05 2±0.05 0.6±0.1 1.5+0.10-0.00
1608 1.9±0.1 1.1±0.1 8±0.2 3.5±0.05 1.75±0.1 4±0.1 4±0.1 0.9±0.1 1.5±0.1
2012 2.3±0.1 1.5±0.1 8±0.2 3.5±0.05 1.75±0.1 4±0.1 4±0.1 0.9±0.1 1.5±0.1

Reel Dimension

Unit:mm

Leadless Chip Thermometrics NTC Thermistor , SMD / Surface Mount Thermistor

type A B C D E W W1
1005 178.0±1.0 60.0±0.5 13.0±0.2 21.0±0.2 2.0±0.5 9.0±0.50 1.5±0.15
1608 178.0±1.0 60.0±0.5 13.0±0.2 21.0±0.2 2.0±0.5 9.0±0.50 1.5±0.15
2012 178.0±1.0 60.0±0.5 13.0±0.2 21.0±0.2 2.0±0.5 9.0±0.50 1.5±0.15

Packaging Quantity Unit:pcs

type 1005 1608 2012
quantity 10000 4000 4000
Minimum ordering 10000 4000 4000

Enviromental Reliability Test

Characteristic Test method and description
High Temperature Storage The specimen shall be subjected to 125℃ for 1000 hours in a thermostatic bath without load and then stored at room temperature and humidity for 1 to 2 hours. The change of varistor voltage shall be within 10%.
Temperature Cycle The temperature cycle of specified temperature shall be repeated five times and then stored at room temperature and humidity for one two hours. The change of varistor voltage shall be within 10%and mechanical damage shall be examined. Step Temperature Period
1 -40±3℃ 30min±3
2 Room Temperature 1~2hours
3 125±2℃ 30min±3
4 Room Temperature 1~2hours
High Temperature Load After being continuously applied the maximum allowable voltage at 85℃ for 1000hours, the specimen shall be stored at room temperature and humidity for one or hours, the change of varistor voltage shall be within 10%.

Damp Heat Load/

Humidity Load

 The specimen should be subjected to 40℃,90 to 95%RH environment, and the maximum allowable voltage applied for 1000 hours, then stored at room temperature and humidity for one or two hours. The change of varistor voltage shall be within 10%.
Low Temperature Storage The specimen should be subjected to -40℃, without load for 1000 hours and then stored at room temperature for one two hours. The change of varistor voltage shall be within 10%.

Product tags

ptc thermistor resistance table

,

ntc and ptc thermistors

,

ntc thermistor resistance table
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Leadless Chip Thermometrics NTC Thermistor , SMD / Surface Mount Thermistor

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Product Detail
Place of Origin :
Dongguan,China
Brand Name :
UCHI
Certification :
UL,SGS.CTI,ROHS
Model Number :
XTV
MOQ :
ONE REEL
Price :
Negotiable
Contact Supplier
Leadless Chip Thermometrics NTC Thermistor , SMD / Surface Mount Thermistor

Guangdong Uchi Electronics Co.,Ltd

Verified Supplier
12 Years
guangdong, dongguan
Since 2006
Business Type :
Manufacturer, Exporter
Main Products :
Metal Oxide Varistor, SMD Varistor, Thermally Protected Varistor
Total Annual :
1,500,000-2,500,000
Employee Number :
138~168
Certification Level :
Verified Supplier
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